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Study on Flexible Experimental Platform for Small-scale Refrigeration Equipment

Author: DuanPeng
Tutor: JiangZhouShu；DingQiang
School: Hangzhou University of Electronic Science and Technology
Course: Detection Technology and Automation
Keywords: Inverter air conditioner Flexible . NET Control algorithm
CLC: TP311.52
Type: Master's thesis
Year: 2009
Downloads: 50
Quote: 1
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Abstract


Inverter air conditioner because excellent performance, energy saving features, air conditioning has become the main development direction. At present, for inverter air conditioner product development, the cooling system and electrical control system development process is relatively isolated, difficult to guarantee the quality of the development progress and performance, resulting in large amount of experimental work, the development cycle is longer. How to speed up the development of inverter air conditioner products, companies vying for market share and become a key to improve efficiency research topic. Proposed a flexible miniature refrigeration equipment experimental platform development program with a modular, interchangeable and other flexible features. Through experimental platform for small refrigeration unit charged with the control of parts of the experimental process of collecting and analyzing various parameters to achieve the optimal design of the refrigeration system, and directly on the platform to achieve its control system functions. Get software design various parameters needed to identify and improved control strategies to shorten product development cycles, improve product development quality. First developed by studying the process of refrigeration equipment and rules, combined with the state of the inverter air conditioner product quality standards and test methods proposed experimental platform for small refrigeration unit flexible hardware design. Elaborated their system design process and works. Bench, including computer hardware systems, programmable logic controller (PLC), converter, input capture module, the output control module, the realization of experimental data collection and computing processing, compressors, electronic expansion valves, fans and other components control. According to R \u0026 D needs, the software presents the overall functionality and design framework and structure. Use under the integrated development environment ControlStar complete programmable controller software design, implementation, control and management of the hardware system. According to the design of object-oriented software design ideas using the Unified Modeling Language (UML) use cases for each of the system carried out a detailed design. In the. NET development environment, including the completion of the interface display, data processing, control algorithms and performance analysis module of the software design. Complete system using SQL Server 2005 database development for the experimental data storage, use ADO.NET and Linq to SQL, etc. complete data access. In the analysis of the existing inverter air conditioner control strategy, based on the realization of a variety suitable for inverter air conditioner microprocessors and product features to meet the actual needs of the control algorithm to ease the design load, modify, observation and research to meet the controller design type requirements. The paper also designed a fault diagnosis and performance analysis module, proposed rule-based expert system diagnostic assays to achieve the optimal design of the refrigeration system. Finally, an experimental platform debugging, summing up the work, for the inadequacies of the proposed improvement direction. Experimental results show that the platform of the topics of the various functions required.

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CLC: > Industrial Technology > Automation technology,computer technology > Computing technology,computer technology > Computer software > Program design,software engineering > Software Engineering > Software Development
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